Hydraulic press.



W. GOYDER & N. G. BECKWITH.

HYDRAULIC PRESS.

APPLIUATIoN FILED 00T. a, 1910.

1,054, 1 9,7, Patentea Feb; 25, 1913.

WILLIAM GOYDER AND NORMAN GILES BECKWITI-I, OF LONDON, ENGLAND.

HYDRAULIC PRESS.

Specification of Letters Patent.

Patented Feb. 25, 1913.

Application filed October S, 1910. Serial No. 586,027.

To all whom it may concern Be it known that we, VILLIAM Gorman and NORMAN GiLns BECKWI'FH, both subJccts --of the King of Great Britain, residing at London, England, have invented new and useful Improvements in Hydraulic Presses, of which the following is a specification.

This invention relates to pistonless hydraulic presses of the type in which a moving pressure plate is carried by a collapsible wall between guides which support a fixed pressure plate.

According to this invention, the collapsible wall is formed of a plurality of steel cylinders connected together by .suitable flexible material.

The accompanying drawing shows one form of press made in accordance with this invention.

Figure l is an elevation; Fig. 2 a horizontal section on line X-X of Fig. 1; and Fig. 3 a vertical section on line Y-Y of Fig. 2.

a are the guides carrying the fixed plate b.

c are short steel cylinders the uppermost of which carries the movable pressure plate d, while the lowermost is secured to the bed plate e. The cylinders c are connected to one another by flexible material f'in the internal undulations of which they are ventirely embedded as shown in Fig. 2. The top cylinder and preferably also all the other cylinders c carry rings g sliding on the guides a. Or instead of the sliding rings g, the plates e and Z respectively may carry guiding rods g", gXx which will serve not only to maintain the cylinders c always in a concentric condition, whether the chamber is expanded or collapsed, but will also serve to limit the downward movement of the plate Z and cylinders c, and prevent undue pressure or weight being put upon the corrugations of the flexible material when the press is out of use. That is to say, when the press is out of use or at rest as in Fig. l, the weight of the movable pressure plate will be carried by the bed-plate e by reason of the lower ends of the rods gux coming into contact with the bed-plate e, and the upper ends of the rods g* coming into contact with the movable pressure plate d.

Such a press is cheaply and easily made, is steady, and very strong.

Having described the invention, what we claim as new and desire to secure by Letters Patent is:

1. A pistonless hydraulic press comprising a moving pressure plate supported by a collapsible wall composed of a plurality of super-posed metal cylinders spaced apart from one another but connected together and to the moving pressure plate and bedplate by flexible material, whereby the flexible material between the ends of the metal cylinders permits of the expansion and collapsing of the press, the metal cylinders being entirely embedded within the inner undulations of the flexible material, substantially as described.

2. A pistonless hydraulic press comprising a moving pressure plate supported by a collapsible wall composed of a plurality of super-posed metal cylinders spaced apart from one another but connected together and to the moving pressure plate and bed-plate by flexible material, whereby the flexible material between the ends of the metal cylinders permits of the expansion and collapsing of the press, the metal cylinders being entirely embedded within the inner undulations of the flexible material, and internal guiding and stop rods, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

WILLIAM GOYDER. NORMAN GILES BECKWITI-I.

Witnesses:

STEPHEN EDWARD GUNYON, SIDNEY AARrI-IUR JAMES GRIMES.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

